Which statements are true of the september 11, 2001, attacks against the united states? check all that apply. after boarding four planes, terrorists attacked flight crews and took over the planes’ controls. many of the terrorists involved in the attack were trained at flight schools in the united states. the terrorists flew two of the planes into the world trade center buildings in new york city. the terrorists used remote devices to fly planes into targets in new york city and washington, dc. the planes brought down the world trade center buildings after jet fuel caused a large fire. the terrorists attempted to board planes but were stopped by airport security measures.

the true statements are,

After boarding 4 planes, terrorists attacked flight crews and took over the planes controls.

Many of the terrorists involved in the attacks were trained at flight schools in the US.

The terrorists flew two planes into the World Trade Center buildings in New York City.

The planes brought down the World Trade Center buildings after jet fuel caused a large fire.

After boarding 4 planes, terrorists attacked flight crews and took over the planes controls.

Many of the terrorists involved in the attacks were trained at flight schools in the US.

The terrorists flew two planes into the World Trade Center buildings in New York City.

The planes brought down the World Trade Center buildings after jet fuel caused a large fire.

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Explanation:

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

the enslaved people onboard suffered from illness with some frequency